On Tue, 11 May 1999, Jack Yates wrote:
>
> I've heard the rear gear ratio be 3.92 and I've also
> heard 9 1/4, if this makes sense to anyone, whats the
> difference?
> Thanks
The gear ratio has to do with the number of teeth on the gears;
a 3.92 ratio (3.92:1) means that your tires will spin once for every
3.92 revolutions of the driveshaft. The lower the gear ratio
(numerically higher), the better your accelleration will be (generally),
and the higher the gear ratio (numerically lower), the better your top
speed capability will be. I plan to install 4.10 gears in my Dak,
which should help out quite a bit at the strip (I have 3.55 now), but
will also lower my potential top speed. (And also make the rpm's
higher at any particular speed, which usually has an adverse affect
on gas mileage.)
The 9 1/4 refers to the actual size of the gear. (9.25" in
diameter) In general, the bigger the gear, the stronger it will
be. Your 9.25 rearend is plenty beefy! My Dak only has an 8.25,
and has already blown apart once. Many quick dragstrip cars use
a Chrysler 8.75" or a Ford 9", or a Dana 60 (I don't know how big that
is). One of these days, I'd like to put the 9.25 in my Dak...
I think I got all that right; if I didn't I'm sure someone will say
so. :-)
-Jon-
.--- stei0302@cs.fredonia.edu ----------------------------------------.
| Jon Steiger * AOPA, DoD, EAA, MP Race Team, NMA, SPA, USUA * RP-SEL |
| '96 Dodge Dakota v8 SLT CC (14.58@93.55), '96 Kolb FireFly 447 |
`--------------------------- http://www.cs.fredonia.edu/~stei0302/ ---'
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